F27D 11/04
With direct passage of current through the material being heated
Official title: with direct passage of current through the material being heated
F27D11/04 (With direct passage of current through the material being heated) appears on 52 US grants and 39 published applications in this corpus.
Search patents in F27D- Granted patents
- 52
- Published applications
- 39
- Assignees
- 49
- Inventors
- 152
- Latest grant
- 4 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 4 |
| 2014 | 1 | 1 |
| 2015 | 2 | 1 |
| 2016 | 1 | 4 |
| 2017 | 3 | 3 |
| 2018 | 1 | 4 |
| 2019 | 3 | 1 |
| 2020 | 0 | 1 |
| 2021 | 3 | 2 |
| 2022 | 1 | 2 |
| 2023 | 0 | 2 |
| 2024 | 2 | 0 |
| 2025 | 1 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electric power supply apparatus for a high-power user device4 Mar 2025US 12,244,150 B2Danieli Automation S.P.A.
- Bus bar design to enable high current input for low resistivity glasses28 May 2024US 11,993,533 B2Corning Incorporated
- Heating element comprising chromium alloyed molybdenum disilicide and the use thereof9 Jan 2024US 11,866,371 B2Sandvik Intellectual Property AB
- Inline resistive heating system and method for thermal treatment of continuous conductive products25 Jan 2022US 11,231,229 B2Illinois Tool Works Inc.
- Heat treatment apparatus for carbonaceous grains and method therefor6 Apr 2021US 10,967,348 B2Nippon Electrode Co., Ltd.
- Electrode Material Sintering System27 Aug 2026US 2026/0249353 A1LG Chem.Ltd.
- Heating method and heating system26 Jun 2025US 2025/0207214 A1NHK Spring Co., Ltd.
- Electrode propulsion structure with unequal propulsion amount based on electrode erosion rule and electrode propulsion method12 Jun 2025US 2025/0187964 A1Caihong Display Devices Co., Ltd.
- Electric glass furnace, methods for the melting and manufacture of glass by means of said furnace8 May 2025US 2025/0145511 A1
- Method for recovering valuable metal10 Aug 2023US 2023/0250508 A1Sumitomo Metal Mining Co., Ltd.
Most cited
By later US patents
- Graphitization furnace16US 4,015,068 ASigri Elektrographit GmbH · 1977
- Method and apparatus for graphitization of carbon materials14US 4,017,673 ASigri Elektrographit GmbH · 1977
- Heating control apparatus10US 4,705,930 ADuncan Enterprises · 1987
- Method to protect the anode bottoms in batch DC electric arc furnace steel production10US 6,693,947 B1D. L. Schroeder & Associates · 2004
- Method and calcining furnace for electric calcining of carbonaceous material8US 6,157,667 AElkem ASA · 2000